1
NDA General Ability 13 April 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language

When a solid body is partially or completely immersed in a fluid, the fluid exerts an upward force on the body. The magnitude of the force is equal to
1.the mass of the body
2.the weight of the displaced fluid by the body
Which of the above is/are correct?

1
1 only
2
2 only
3
Both 1 and 2
4

Neither 1 nor 2

2
NDA General Ability 13 April 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
If the length of a copper wire is increased by twice, then its resistivity will be
1
Doubled
2
Halved
3
Same
4
One-fourth
3
NDA General Ability 13 April 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following is dimensionless quantity?
1
Stress
2
Strain
3
Pressure
4
Force
4
NDA General Ability 13 April 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
A system that does NOT allow exchange of heat with its surrounding is called
1
Adiabatic system
2
Non-adiabatic system
3
Equilibrium system
4
Non-equilibrium system
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